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/*
* Copyright (c) 2023 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "dpo_lr.h"
#include "strategy_lr.h"
#include "../strategy_dpo_manager.h"
#include "../strategy_dpo_ctx.h"
/**
* @brief DPO type value for the lr_strategy
*/
static dpo_type_t hicn_dpo_type_lr;
static const hicn_dpo_vft_t hicn_dpo_lr_vft = {
.hicn_dpo_is_type = &hicn_dpo_is_type_strategy_lr,
.hicn_dpo_get_type = &hicn_dpo_strategy_lr_get_type,
.hicn_dpo_module_init = &hicn_dpo_strategy_lr_module_init,
.hicn_dpo_create = &hicn_strategy_lr_ctx_create,
.hicn_dpo_update_type = &hicn_strategy_lr_update_ctx_type,
.hicn_dpo_add_update_nh = &hicn_strategy_lr_ctx_add_nh,
.hicn_dpo_del_nh = &hicn_strategy_lr_ctx_del_nh,
.hicn_dpo_format = &hicn_dpo_strategy_lr_format
};
const static dpo_vft_t dpo_strategy_lr_ctx_vft = {
.dv_lock = hicn_strategy_dpo_ctx_lock,
.dv_unlock = hicn_strategy_dpo_ctx_unlock,
.dv_format = hicn_strategy_dpo_format,
};
int
hicn_dpo_is_type_strategy_lr (const dpo_id_t *dpo)
{
return dpo->dpoi_type == hicn_dpo_type_lr;
}
void
hicn_dpo_strategy_lr_module_init (void)
{
/*
* Register our type of dpo
*/
hicn_dpo_type_lr = hicn_dpo_register_new_type (
hicn_nodes_strategy, &hicn_dpo_lr_vft, hicn_lr_strategy_get_vft (),
&dpo_strategy_lr_ctx_vft);
}
dpo_type_t
hicn_dpo_strategy_lr_get_type (void)
{
return hicn_dpo_type_lr;
}
//////////////////////////////////////////////////////////////////////////////////////////////////
u8 *
hicn_dpo_strategy_lr_format (u8 *s, hicn_dpo_ctx_t *dpo_ctx, u32 indent)
{
int i = 0;
s = format (s, "hicn-lr");
for (i = 0; i < HICN_PARAM_FIB_ENTRY_NHOPS_MAX; i++)
{
u8 *buf = NULL;
if (i < dpo_ctx->entry_count)
buf = format (NULL, "FIB");
else if (i >= HICN_PARAM_FIB_ENTRY_NHOPS_MAX - dpo_ctx->tfib_entry_count)
buf = format (NULL, "TFIB");
else
continue;
s = format (s, "\n");
s = format (s, "%U ", format_hicn_face, dpo_ctx->next_hops[i], indent);
s = format (s, " %s", buf);
}
return (s);
}
void
hicn_strategy_lr_ctx_create (fib_protocol_t proto,
const hicn_face_id_t *next_hop, int nh_len,
index_t *dpo_idx)
{
hicn_dpo_ctx_t *hicn_strategy_ctx;
/* Allocate a hicn_dpo_ctx on the vpp pool and initialize it */
hicn_strategy_ctx = hicn_strategy_dpo_ctx_alloc ();
*dpo_idx = hicn_strategy_dpo_ctx_get_index (hicn_strategy_ctx);
init_dpo_ctx (hicn_strategy_ctx, next_hop, nh_len, hicn_dpo_type_lr,
(dpo_proto_t) proto);
}
void
hicn_strategy_lr_update_ctx_type (hicn_dpo_ctx_t *hicn_strategy_ctx)
{
hicn_strategy_ctx->dpo_type = hicn_dpo_type_lr;
// don't care to reset data, it is not used
}
int
hicn_strategy_lr_ctx_add_nh (hicn_face_id_t nh, index_t dpo_idx)
{
hicn_dpo_ctx_t *hicn_strategy_dpo_ctx = hicn_strategy_dpo_ctx_get (dpo_idx);
u8 pos = 0;
if (hicn_strategy_dpo_ctx == NULL)
{
return HICN_ERROR_STRATEGY_NOT_FOUND;
}
hicn_strategy_dpo_ctx_add_nh (nh, hicn_strategy_dpo_ctx, &pos);
// nothing else to initialize in this strategy
return HICN_ERROR_NONE;
}
int
hicn_strategy_lr_ctx_del_nh (hicn_face_id_t face_id, index_t dpo_idx)
{
hicn_dpo_ctx_t *hicn_strategy_dpo_ctx = hicn_strategy_dpo_ctx_get (dpo_idx);
// No need to change the current_nhop. It will be updated at the next
// selection.
return hicn_strategy_dpo_ctx_del_nh (face_id, hicn_strategy_dpo_ctx);
}
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